It would not have been worthwhile to carry out maintenance work on the ship's fuel system when the ship is moving in the Hjulgrund bottleneck in the middle of Åland.
The observation was summed up by Viking Amorella's previous grounding less than seven years ago.
Even then, the steel of the ship roared in the waters of Hjulgrund, the reason for the failure of the steering.
Amorella's narrow fortune is located between Lumparlad, one of the main islands of Åland, and the smaller island of Föglö in the eastern part of the province.
In December 2013, electricity was lost from Amorela for four minutes and that was enough.
When the connection from the bridge to the rudders disappeared, the 170-meter-long vessel could no longer be steered in the narrowing.
Since the main engines also stop, braking was not successful either.
The ship was windswept or actually self-propelled.
The anchor was dropped.
It was only launched a second time.
The dragging anchor slowed the vessel somewhat, but the anchor plowing the clay bottom was not the stop of the ship.
The ship, which weighed tens of thousands of tons, continued its voyage hundreds of meters after losing its main control.
The ship could be steered by an emergency system for some time.
Its use was hampered by the fact that the rudder angle indicator was broken.
There is a so-called inertia, or inertia, in the movements of a ship weighing tens of thousands of tons, which would make the rudder angles important in steering decisions.
Now they were not available and the ship had to be steered in an emergency.
by perching in the middle of a narrow.
With emergency steering, the platform can be driven a few turns before the energy stored in the hydraulic pressure accumulator runs out.
In emergency steering, there was enough force to turn the ship away from the more dangerous part of the fairway to the right, but there was not enough pressure to stop the turn that had already begun.
The ship ran aground on the rocks and there was a leak in the bulge.
It had taken a little over four minutes from the machines to go off the rocks.
The fate was that eight seconds after the ship was stranded, the main engines were restarted.
But they were no longer helpful in preventing the accident.
Amorella was caught on the ground.
The Hjulgrund Narrow is no death trap, it drives through thousands of ships every year without any problems.
There are several similar points on the shipping lanes in the Finnish waters divided by the archipelago.
Finnish seafarers know the waters.
- When passing through the archipelago, there are a lot of narrow places, and this is one of them.
There are islands and ravines in it.
But I would not consider it a particularly dangerous or anomalous place, says Marko Stenberg, Safety and Preparedness Manager of the Finnish Maritime Rescue Association.
However, there is no room for bad luck and conscious risk-taking in the place.
- If a technical fault occurs in a narrow, cramped place, and the ship loses its maneuverability, then it easily hurts.
If a similar thing happens on the high seas, then there is usually nothing to worry about.
There is time to fix a technical fault, for example, and drifting on the high seas does not necessarily cause problems, Stenberg says.
The cause of the recent crash is not yet known, but Stenberg said the captain did the right thing after the accident.
- The master of the vessel did the right thing by lowering the vessel and stabilizing it.
There was no danger of sinking, and it also made it easier to evacuate when the ship was not moving, Stenberg says.
In December 2013, the preheaters of the fuel system for electric grinding machines for Amorella were repaired.
They were left with a fuel leak that stopped the auxiliary and main engines in the wrong place, i.e. in the middle of a bottleneck.
As the electricity went on, the hydraulic pumps that powered the rudder also fell silent.
The platform could no longer be steered.
The rudders remained in the position they were in at the time of the failure.
For emergencies, the system has a pressure accumulator, but the duration of the steering force it produces is limited.
Usually on board the steering ability is regained when the emergency generators start, but at that time the steering will be slower than normal at that time.
There is also an emergency steering position in the rudder room if it is not possible to steer from the navigating bridge.
That, too, requires electricity to operate.
Lessons were learned from the accident.
Prior to the accident, there were no restrictions in the fuel preheater maintenance instructions regarding the time of work or the location of the vessel.
Following the accident, risky maintenance was restricted to those sections of the routes where they could pose a hazard.